Accession Number:

AD0601740

Title:

STUDY OF DUCTILE COATINGS FOR THE OXIDATION PROTECTION OF COLUMBIUM AND MOLYBDENUM ALLOYS

Descriptive Note:

Bimonthly progress rept. no. 5, 1 Mar-30 Apr 1964

Corporate Author:

METALS AND CONTROLS INC ATTLEBORO MA

Personal Author(s):

Report Date:

1964-05-31

Pagination or Media Count:

33.0

Abstract:

Air flow versus weight loss rate data on pure platinum has been extended to an air flow rate of 960 ipm at 2550 F. Increases in flow rate are seen to have a diminishing effect on weight loss rates at higher and higher flow rates. Diffusion studies were performed on platinum-2.5 palladium alloy clad FS-85 and TZM at 2550 F. The diffusion appeared to be transgranular and very rapid for both the TZM and the FS-85 base samples. It is expected that these studies will be extended to include platinum and platinum-10 rhodium alloy coatings during the next report period. Layers of gold, rhenium, aluminum, and boron nitride were deposited on refractory base metal for diffusion barrier studies. Evaluations of the samples containing aluminum and boron nitride have initially indicated that these materials will not be useful for diffusion barriers.

Descriptors:

• *CORROSION INHIBITION
• *PROTECTIVE COATINGS
• *DUCTILITY
• *MOLYBDENUM ALLOYS
• *NIOBIUM ALLOYS
• HIGH TEMPERATURE
• METAL COATINGS
• RHENIUM
• PLATINUM ALLOYS
• SCIENTIFIC RESEARCH
• RHODIUM
• BORON COMPOUNDS
• GOLD
• PALLADIUM
• PLATINUM
• NITRIDES
• OXIDATION
• ALUMINUM

Subject Categories:

• Coatings, Colorants and Finishes

Distribution Statement:

APPROVED FOR PUBLIC RELEASE